The WSJ has an opinion article between Brian Greene, a leading proponent of string theory and David Gelernter, a leading computer professor at Yale. The discussion covers the math that suggests multiverses, possible future proofs and philosophic suggestions, such as, how many David Gelernters are there?-WSJ: http://online.wsj.com/article/SB10001424052748703956604576109891641757806.html?KEYWORDS... Greene, theoretical cosmologist and author:-http://en.wikipedia.org/wiki/Brian_Greene-David Gelernter, victim of the unibomber:-http://en.wikipedia.org/wiki/David_Gelernter